From 934694747667386490d5a1fbba8fb7b23d329930 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Wed, 29 Jul 2020 12:21:30 +0200
Subject: [PATCH] catch exceptions during orientation

---
 src/ifcgeom/kernels/cgal/CgalKernel.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/ifcgeom/kernels/cgal/CgalKernel.cpp b/src/ifcgeom/kernels/cgal/CgalKernel.cpp
index f75e718234..5228d919da 100644
--- a/src/ifcgeom/kernels/cgal/CgalKernel.cpp
+++ b/src/ifcgeom/kernels/cgal/CgalKernel.cpp
@@ -25,6 +25,7 @@
 #include "../../../ifcgeom/kernels/cgal/CgalConversionResult.h"
 
 #include <CGAL/minkowski_sum_3.h>
+#include <CGAL/exceptions.h>
 
 using namespace ifcopenshell::geometry; 
 using namespace ifcopenshell::geometry::kernels;
@@ -58,8 +59,12 @@ CGAL::Polyhedron_3<Kernel_> ifcopenshell::geometry::utils::create_polyhedron(std
 		//    fresult.close();
 		return CGAL::Polyhedron_3<Kernel_>();
 	} if (polyhedron.is_closed()) {
-		if (!CGAL::Polygon_mesh_processing::is_outward_oriented(polyhedron)) {
-			CGAL::Polygon_mesh_processing::reverse_face_orientations(polyhedron);
+		try {
+			if (!CGAL::Polygon_mesh_processing::is_outward_oriented(polyhedron)) {
+				CGAL::Polygon_mesh_processing::reverse_face_orientations(polyhedron);
+			}
+		} catch (CGAL::Failure_exception& e) {
+			Logger::Message(Logger::LOG_ERROR, e);
 		}
 	}